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   sci.electronics.basics      Elementary questions about electronics      72,318 messages   

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   Message 70,565 of 72,318   
   George Herold to Tom Del Rosso   
   Re: Using a TO-220 heat sink   
   03 May 18 17:22:49   
   
   From: gherold@teachspin.com   
      
   On Thursday, May 3, 2018 at 7:25:39 PM UTC-4, Tom Del Rosso wrote:   
   > George Herold wrote:   
   > > On Thursday, May 3, 2018 at 3:44:21 PM UTC-4, Tom Del Rosso wrote:   
   > >> jurb6006@gmail.com wrote:   
   > >>>> "If you have grease, use it and throw the pad away. "   
   > >>>   
   > >>> Then you have to float the sink.   
   > >>   
   > >> Why would that be difficult?   
   > >   
   > > I've got boxes where the best place for the pass element   
   > > is the back panel, which is typically grounded.   
   >   
   > That's if the panel is the heat sink, but for a separate hunk of metal   
   > (which is small like a TO-220) it should usually be possible to float   
   > it.  I would think.   
   Well at some point the heat has to make it's way to the outside   
   world.  My first instrument at my CPoE has a bunch of floating   
   heat sinks.  I had to add a fan.  As bad as sil pad is, it's better   
   than air.  (I've got dreams of redesigning my first instrument...   
   well and all the others too.  :^)   
   >   
   >   
   > > (It depends on power... I'm a class A type of guy. :^)   
   >   
   > I can tell.   
   Grin,   
   George H.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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